Wegman valves offers various types of ball valves
A floating ball valve is a ball valve than has fixed seats with the ball “floating” between the seats. “Floating” because it’s held in its place by the seats and nothing else.
The ball is pressed against the seats by the medium.
A floating ball valve body can be made of forged or cast material.
The body can consist of 1, 2 or 3 pieces which can be called: single body uni body, 1 piece body, end entry, 2 piece body, split body, 3 piece body.
Typically available from ¼” till 12” where the maximum size will depend on the pressure rating. If the rating goes up, the maximum size goes down.
The available port or bore size is reduced or full. Reduced is normally 1 pipe size smaller and full is, as you can guess, same as the pipe size. Check the standards for the actual dimensions.
A ball valve can be “straight” (1 inlet, 1 outlet) or have a multiport (3-way, 4 way, or more) and related names are L bore and T bore.
Body materials can be almost any, the most common are: cast iron, Ductile iron, forged or cast steel (A216 WCB / WCC, A105, LF2) and Stainless Steel (CF8M, F316). The valve body and ball can also be lined, a lower grade body material is used and the internal parts have a PTFE, FEP, PFA lining that is resistant to the usually corrosive medium. The alternative to lining is using a high alloy material.
Seat materials typically are: Nylon, Devlon, Teflon (TFE, PTFE, CTFE, etc.), metal (hardened), PEEK, KEL-F (PCTFE).
If you want to use a ball valve to “control” the flow it can have a V port, either made in the seat or the ball.
The body parts are typically bolted together but smaller valves are also screwed and even seal welded is possible.